Warp stop-motion for looms



(No Model.) 4 Sheets-Sheet 1.

0. SMITH.

WARP STOP MOTION FOR LOOMS.

No. 521,298. Patented June 12, 1894.

66. fm WWtflQ (No Model.) 4 Sheets-Sheet 2.

. SMITH.

' WARP MOTION FOR LO0M.S.. No. 521,298. Patented June 12, 1894.

(No Model.) '4 Sheets-Sheet 3. 0 SMITH WARP STOP MOTION FOR LOOMS.

No. 521,298. Patented June 12, 1894.

wig 67066886.

45' NATlONAl, umouRAPnma 4 SheetsS (No Model) 0. SMITH. WARP STOP MOTIONFOR LOOMS.

No. 521,298. Patented June 12, 1894.

STATES PATENT OFFICE OBERLIN SMITH, OF BRIDGETO N, NEW JERSEY, ASSIGNOROF ONE-HALFTO GEORGE DRAPER & SONS, OF HOPEDALE, MASSACHUSETTS.

WARP STOP-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 521,298, dated June 12,1894. Application filed May 2, 1893- Serial No. 472, 706. (No model.)

To aZZ whom it may concern: in accordance with the present embodiment Beit known that I, OBERLIN SMITH, of of this invention; Fig.1, aperspective de- Bridgeton, county of Cumberland, State of tail of thecatch h; Fig. 1 a sectional detail New Jersey, have invented anImprovement of the abutment plate showing the difference 5 5 in WarpStop-Motions for Looms, of which the in length of the two cam surfacesat and m following description, in connection with the Fig. 2, a sectiontaken on the dotted line 00-00 accompanying drawings, is aspecification, showing the lay in its rearmost position, and likeletters on the drawings representing like also showing the breast beam,weft fork leparts. ver, cut-out, and abutments to be described, 60 Thisinvention relates to warp stop mothe same being on'asmaller scale thanFig. tions for looms, the object of the invention 1; Fig. 2*, a detailtop view, of the weft fork being to provide a stop motion simple andlever and cut-out, Fig. 2. Fig. 3, shows the cheap in construction,delicate and sensitive lay, parts carried thereby, and a part of the initsaction, and one not easily disarranged or abutment shown in Fig. 2,on a larger scale; 65 otherwise made unsuitable for proper opera- Fig.3, top and side views respectively of tion. In this stop .motion, as inother stop one of the spacers inserted between the reed motions of thisclass now in use, I employ a dents and provided with a side lug tosupseries of warp detectors which are arranged port the depressor; Fig.3 a side view of between the reed dents and are moved from one of thespacers without the side lug; 7o their normal into their abnormalpositions by Fig. 4, sectional views showing the reed, parts the perfector unbroken warp threads, a carried thereby,dagger, and a part of itsabutbroken thread failing to move its detector ment, with the partsindifferent position from and thereby stopping the loom. the positionFigs. 2 and 3; Fig. 5, asectional One of the principal features of thisinvenview similar to Fig. 1, on a larger scale, show- 75 2 tion consistsin so pivoting the detectors with ing the parts in yet another position;Fig. 5, relation to the point of contact of the deteca partial top viewof the depressor; Figs. 6 tor with its Warp thread, that longitudinaland 7, vertical and cross sectional details of movementof the detectoraudits warp thread, each of two different forms of constructions onewith relation to the other, will by reason of detector heads; Fig. 8, asectionaldetail So 0 of the friction incident to such movementactshowing one application of my stop motion to to move the detector aboutits pivot, as well the lower ends of the reed dents in position as anylateral- -up and down in this case to be controlled by the threads inthe lower movement of the warp thread due to shedplane of the shed; Fig.9, a cross sectional ding of the same, thereby greatly increasing viewshowing devices whereby the warp 85 5 the sensitiveness and efficiencyof the stop threads may be tightened bylateral movemotion. ment of theheddle and also by means of a Another important feature of thisinvencirculation ofair; Fig. 10, a sectional detail tion is adepressor,which at the proper times showing yet another means of moving the ismoved to push the detectors from their northreads by circulation of air;and Fig. 11, a 90 40 mal into their abnormal positions in ordersectional detail illustrating one form of lint that they may be properlyacted upon and clearing device. moved by the Warp threads to indicatethat Referring to'the drawings, the lay swords the said threads areunbroken. A; lay B; hand rail 0 and breast beamDare Other features ofthis invention, including and may be of any suitable or desired con- 5means by which to draw any slack threads struction so far as concernsthis present intaut, together with various constru ctional devention.

tails will be hereinafter described, and point- Referring particularlyto Figs. 1 to 5, ined out in the claims. clusive, in the embodiment ofmy invention Figure 1, is a face view of a part of the lay hereinselected for the purpose of illustrat- T00 partially broken away,showing the reed, dcing the same, the reed dents a, are shown astectors, feeler, and depressor as constructed bolted together to form areed by means of three longitudinal bolts or rods a, the reed dentsbeing drawn together, with suitable spacing blocks a between their endsto maintain them at the proper distance from each other, by nuts athreaded upon the ends of said bolts or rods. Suitable spacers afiFigs.3 and 3 are interposed between the reed dents intermediate their ends,the middle bolt rod a preferably passing through these spacers, asshown. The spacers a are also further secured against displacement by asmall rod a which extends longitudinally of the lay through to the reeddents and spacers between the same, see Figs. 1 and 3, so that the reeddents maybe clamped firmly and rigidly together without danger ofcramping in any degree the reed spaces between the dents in which thedetectors are placed, the reed when thus bolted togetherbeing insertedin the lay in usual manner, it being at all times removable therefrom.Each reed space receives a warp detector b, the said detectors, asherein shown and preferably, being pivoted upon a rod b extendedlongitudinally of the lay through the reed dents and constitutiug acommon pivot rod for all the detectors. Each detector is providedpreferably at its lowermost point with a head 11 see Fig. 6, which isnotched at its under side, as at Z1 to constitute a warp contact, thedetectors being moved by the unbroken warp threads by the action of thelatter upon or in the said warp contacts. As herein shown andpreferably, the heads 12 of the detectors are made thicker or wider thanthe bodies of the detectors,said heads projecting laterally beyond thereed spaces into openings a in the reed dents, the said heads beingstaggered, as shown in Fig. 6, the alternate heads being lower than theintermediate heads in order that the heads may be extended at each sideof their respective detector bodies to a distance equal to the entirethickness of the reed dents at either side to thereby avoid as far aspossible displacement of the warp threads from the warp supports in theheads of the detectors. Each detector is provided with a tail portion N,to be hereinafter referred to, and with a laterally extended arm I),also to be referred to.

It will be noticed by referring particularly to Fig. 3, that the spacersa are located immediately above and in close proximity to the detectorsarranged in the several reed spaces and that each spacer has adownwardly extended tail portion a which extends down past the pivotalpoint of and terminates immediately above the detector in the same spacewith it, the result being that the reed dents are firmly held betweenthe spacers and immediately above the warp supports, so that liabilityof the reed dents separating at any time is practically prevented,thereby practically avoiding any possibility of the warp thread becomingdisplaced from the warp contact in its detector.

By reference to Fig. 1, it will be seen that a portion only of the reeddents are extended to the upper bolt rod a, nearly all of the reed dentsterminating at the middle rod a, the end reed dents alone beingcontinued beyond to the upper rod a. This reduces the size of theintermediate reed dents and at the same time by continuing the end reeddents to the uppermost rod, as shown, convenient support or supports areprovided for other parts of the mechanism,as will be hereinafterdescribed.

The reed is made intact before it is applied to the lay or support andcarries with it, as shown, both the feeler and depressor, and when saidreed is applied to the lay, as shown in the drawings, it is readilyslipped into suitable grooves provided for it in a manner well known inloom construction.

A rodfextending through the upper ends of the longer reed dents, seeFigs. 1 and 3, constitutes a pivot for the feeler F, shown as madetubular or hollow in cross section, and preferably compressed into theshape shown in Fig. 3. This feeler is mounted at its opposite ends uponthe feeler arms f, made thin and extended between the longer end reeddents (1,, and pivoted upon the pivot rod f, said arms having fingers fwhich extend through to the front of the reed and overlie in a positionto act upon the depressor d, shown as a flat plate flanged or turnedover at its upper edge, as at cl Fig. 3. This depressor is provided withT-shaped holes (1 see Fig. 1, by which it is supported upon theprojecting lugs a standing out from several of the spacers, as shown inFig. 3, said lugs having heads a as there shown. The depressor is placedupon these lugs, the larger parts of the openings d permitting the headsof the lugs a to pass through the front side; the depressor is then slidbodily to the right Fig. 1, to bring the narrower portions of theopenings upon the necks of thelugs, the heads of the latter when thedepressor is in such a position preventing displacement, the narrowerportions of the openings being of sufficient size, however, to permitnecessary vertical movement of the depressor behind the said heads toproperly depress the depressor, as will be described. Ears d standing upfrom the flange d of the depressor stand at the sides of the fingers fon the feelerlevers and prevent longitudinal movement of the depressorso long as said feeler levers are in position, so that the depressor,itself simple in construction, is readily attached to and madedetachable from the reed dents. A spring d, Fig. 1, secured to the handrail acts to raise the depressor into its uppermost normal position. Thepivot rods f and b for the feeler and detectors respectively, arerestrained from longitudinal or sliding movement in the reed by slottingtheir ends and inserting in such slots a thin plate I), Fig. 1, clampedbeneath the nut a, said plate having its lowest end turned in andpermitted to spring into an opening in the endmost reed dent, as shown,to thereby restrainit from to tative movement except when the saidinturned end is withdrawn from the openingin the reed dent, the platebeing then readily rotated to remove it from the grooves in the ends ofthe pivot rods to permit the latter to be Withdrawn. At one end of thereed is a feele i' carrier g mounted upon the inner end of a shaft gjourualed in the housings H, H secured to the hand rail, said carrier atits rear end or at the right Fig. 3, being forked to straddle theprojecting end of the feeler F, while at its opposite end the -saidcarrier is, in the present instance, provided with a notch 9 and with alower arc-shaped surface 9 see Fig. 3. The pivotal shaft 9 for thisfeeler carrier is provided at its end outside the lay with a lever 9 theupper end of which has a lug gfl-shown in dotted lines Fig. 1. Movementof the feeler is effected by rocking this shaft g and with it thecarrier g, the latter carrying with it the feel-er. Means for rockingthis shaft and feeler will be hereinafter described.

While the feeler F is of such weight that it will fall by gravity, yet Iprefer to employ a light springf Fig. 3, conuectingthe feelercarrierwith the lay sword, such spring acting to pull the feeler down into itslowermost position.

The feeler-carrier with the feeler are normally retained in theirelevated positions Figs. 1, 2 and 3, by. a U-shaped catch it loose upona shaft h journaled in the housings H, H, said catch having acounterpoise 72, which acts to throw the lower end of the catch h to theright Fig. 3, into engagement with the notch in the end of thefeeler-carrier g, the action of the counterpoise, if desired, beingassisted by a light spring h connected with the housings, as shown. Thecatch h is provided with an inturned ear h shown in detail Fig. 1, backof which lies an arm mfast on the shaft h, to which shaft is alsoattached between the housings H, H,adagger M. The outer endof the shafth, outside of the housings H has an arm m, which, just before the layreaches the end of its backward movement rides upon an inclined camsurface m on an abutment m Fig. 3, and thereby turns said shaft to raisethe dagger M, and at the same time causes the arm m to act upon the earh on the catch it and move the same to the left Fig. 3, out ofengagement with the notch of the feeler carrier g. The abutment m isprovided at its end, see Fig. 2, with a slot m through which is passed abolt m adjustably securing the said abutment to an upright m secured andmade vertically adjustable with relation to the breast beam or frame D,by means of the bolt m and a slot in the support we, not shown. Theabutment m intermediate its ends has a slot m through whichis passed abolt 1% adjustably securing an abutment plate m to the abutment m saidplate having at its upper and lower edges respectively the cam surfacesm? and m the surface m co-operating with the lug g on the lever 9 whilethe lower surface m c0 operates with the lower end of the said lever.The lower cam surface m stands out from its plate in farther than thesurface m, as best shown in Fig. l", the lever 9 being provided with thelug g in order to reach the shorter cam surface m. These surfaces m andm are made to project outwardly at unequal distances in order to permitthe lever g to pass by the upper surface without being engaged by it,leaving it entirely under the control of the lower surface m except whenits lug g contacts with said upper surface.

0, Fig. 2*, represents the usual weft fork carrier, which may be in someinstances a sliding carrier,but whichin the present instance is shown aspivoted at O to the breast beam, and which, in the usual way, pushesforward the shipper to stop the loom; said carrier having secured to itby a screw 0, a plate 0 having an upturned lug 0 at one side and ahandle 0 at its opposite side. This plate 0' constitutes a cut-out whichmay be turned upon the screw 0 into one or another position for apurpose to be hereinafter referred to.

The operation of my improved stop motion is as follows, viz:-Referri ngfirst to Figs. 1, 2 and 3, the lay is shown in a position just previousto the completion of its backward movement, the feeler being held in itsraised position by the catch it in engagement with the notch g in thefeeler carrier g. The warp threads opened to form a shed by the heddlesr, 0", see Fig. 10, carried in suitable heddlefram es R, R, and shiftedin usual manner, are supposed in Figs. 2 and 3, to have acted upon andraisedor turned about theirpivots the detectors Z). With the parts inthis position, further backward movement of the lay in completing itsmovement, will cause the dog m on the shaft h to ride up on the camsurface in on the abutment m and thereby turn the said shaft h on itspivot in the direction of the arrow Fig. 3, to cause its arm m to movethe catch h to the left Fig. 3, out of engagement with the notch g inthe feelercarrier g, thereby permitting the latter, acted upon by theweight of the feeler and by the spring f to be turned on its pivot, anddrop the feeler F behind the tails b of the raised detectors, as shownin Fig. 4, the plain surface g of the feeler-carrier being carriedupwardly into position directly back of the end of the arm m on theshaft h to prevent the latter from resuming its former position whenreleased from the cam surface 1% by the forward movement of thelay. Theshuttle having passed through the open shed, the lay begins its forwardor beating in movement and the heddle frames R, R are shifted to crossthe warp threads and to form a new shed. As the lay moves forward thedog m first moves off from the cam surface m leaving the rock shaft 71.free to resume its normal position as soon as its arm m is released bythe feeler-carrier g. Just before the lay completes its forward movementand after the end of the raised dagger M has passed over the lug 0 onthe weft fork carrier without engaging the said lug, the lower end ofthe lever g on the shaft g, on which is mounted the feeler-carrier, isbrought into engagement with the cam surface 111. on the abutment platem said cam surface acting to turn the lever 9 its shaft and thefeeler-carrier 9 back to the left, Fig. 3, into their originalpositions, lifting the feeler F from behind the tails of the detectors,leaving them free to drop back into their original lowermost positions,such movement of the feeler-carrier releasing the catch hand permittingthe same, the shaft h and dagger M to resume their original positionsFig. 3. The lay having completed its forward or beating-in movement,begins its return or backward movement with the detectors in theirlowermost positions, the feeler raised, and the catch h in engagementwith thenotch g in the feelercarrier holding the latter and the feelerin their raised positions. When the lay has completed preferably aboutone-half its backward movement, andas the warp threads are beginning tobe opened by the shifting of the heddle-frames, the lug g on theupperend of the lever 9 reaches and comes into engagement with the uppercam surface in on the abutment plate m and is depressed slightly by saidcam surface, turning its shaft g and the feeler-carrier g to the leftFig. 3, such movement of the feeler-carrier raising the feeler slightlyand causing the fingers f on its supporting arms f to act upon thedepressor (1, push the same downwardly a short distance to therebypositively push into their lowermost positions any of the detectorswhich may possibly have become clogged with lint, or which from anyother reason have remained in their raised positions and have notdropped with the others when permitted to do so by the withdrawal of thefeeler from behind their tails b. This movement of the depressor is aslight movement only, after which it is re turned to its normal raisedposition by the feeler, its carrier and the shaft g resuming theirnormal positions respectively after the lug on the lever g has passedthe cam surface m. After this movement of the depressor all thedetectors must necessarily be in their lowermost positions to be actedupon during further backward movement of the lay by the open warpthreads and raised or turned about their pivots into their elevated orabnormal positions, Figs. 2 and 3, in order to permit the feeler F todrop behind their tails when the feeler is permitted to drop by the dogm riding up on the cam surface m of the abutment, as previouslydescribed. It will thus be seen that so long as all the deteetors areacted upon and raised by the unbroken warp threads, the feeler F is ateach movement of the lay permitted to drop behind the tails of thedetectors to thereby carry the plain surface 9 of the feeler-carrier upinto position behind the arm m of the shaft h and thereby hold thedagger M in its elevated position during the forward or beatinginmovement of the lay, so that the said dagger will clear the lug 0 on theweft fork carrier and fail to move the latter, thus permitting continuedoperation of the loom. If, however, any warp thread should break orbecome so slack that it would form a defect in the fabric, the detectorat the top of the reed space, through which such broken or loose warpthread is passed, will fail to be raised by said thread at the time whenthe other detectors are raised by the shedding of the unbroken threads.Such detector will, therefore, remain in its lowermost position as inFig. 5, and just before the lay reaches the end of its backward movementwhen the feeler is released and permitted to drop by the dog m ridingupon the abutment cam m said feeler, instead of dropping behind thetails of the detectors as before, will immediately encounter the tail ofthe depressed detector which has been permitted to remain in its normalposition by the breaking of the warp thread, the said feeler beingthereby prevented from dropping to its lowermost position, it remainingin its position as shown in Fig. 5, with the surface 9 of thefeelercarrier lying below the end of the catch 71.. With thefeeler-carrier in this position, as the lay begins its next succeedingforward or beating-in movement, and the dog m leaves the abutment cam mand releases the dagger shaft h, said dagger will not be restrained asbefore by the said surface 9 but will immediately fall into its positionFig. 5, where it will, just before completion of the beatingin movement,strike the lug 0 on the weft fork carrier and move the latter to stopthe loom. The broken warp thread having been mended, the loom is againset in motion, when the detector which stopped the loom will again beraised with the others, and operation of the loom permitted to continueuntil another broken thread permits another detector to remain in itslowermost or normal position with its tail in the path of movement ofand to obstruct the feeler F, when the loom will be stopped as before.

Referring to Fig. 2, by turning the cut-out into its dotted position,the lug 0" is carried to one side out of the path of movement of thedagger on the lay and the stop motion thereby rendered inoperative. Itfrequently happens that one or more of the warp threads while notbroken, yet become so slack that they fail to raise their respectivedetectors, and thus stop the loom when there is no breakage. ReferringtoFig. 9, I have shown two devices to prevent stoppage of the loom fromthis cause when there is no breakage. In said Fig. l I have shown thelay cap or hand rail as provided with two rearwardly extended yieldingarms 3, 3', one of which at each backward movement of the lay strikesthe harness frame which is raised, and pushes I'IO the same backwardly 7with its heddles to thereby draw any slack threads taut in order thatthey may be brought into the same plane wlth the other raised threadsand properly move their detectors to' prevent the stopping of the loom.In addition to this, I have shown mounted upon the lay a bellowsK whichis compressed at each backward movement of the lay by an abutment 7r onthe loom frame, to force air through its outlet is upwardly, and to blowor force slack warp threads into the same plane with the other threads,the circulation of air produced belng sufficient to cause any slackthreads to act upon and raise their respective detectors, said blast ofair also acting as a lint clearing device to free the reed dents anddetectors from lint. The outlet is made variable by the two hingedmembers 70 it one or both of which may be turned down to enlarge, asnecessary, the area of the outlet and correspondingly vary thecirculation of air therethrough.

In Fig. 2, I have shown. a shuttle S having its upper side made inclinedto approximate the upper plane to the shed, thus making the side of theshuttle nearest the harness motion or heddles higher than that side ofthe shut-' tle nearest the fell, the result being that the shuttle byreason of its shape acts to raise any slack warp threads into theirproper positions in the shed.

To keep the shuttle in its proper position while traveling through theshed, I have provided a shuttle guard G which is hinged to be turned upout of the way-when necessary.

In Fig. 7, I have shown a construction for the detectors, in which,instead of staggering the heads thereof and extending each head to thefull thickness of the reed dents at either side, I arrange the heads allin the same line, each headextending at the sides a distancesubstantially equal to one-half the thickness of the adjacent reeddents.

In Fig. 10 is shown another form of air circulating device in which theair is drawn or sucked through an opening 70 in a suction tube 70thereby drawing the slack threads into their proper positions instead ofblowing them into such positions as in Fig. 9.

In Fig. 11 is shown one form of lint clearing and air circulating devicein which the lay is provided with a long tunnel p terminating in aninner port or opening 19' leading to a groove or chamber p formed in thelay immediately in front of the detectors, the latter in this figurebeing shown at the bottom of the reed dents. A simple flap. valve 10controls the port 19, so that when the lay moves forward, the airentering the tunnel in the direction of the arrows, is forced throughthe port to open the valve and blow from the detectors and reed dentsany lint which may have collected and which would act to clog thedetectors and prevent proper operation of the loom. Upon return movementof the lay, the valve 19 closes to prevent any lint being drawn backinto the detectors again.

In Fig. 8 is shown one manner of connecting up my stop motion when thedetectors are placed at the bottom of the reed dents. In said figure,the detectors t are pivoted at If on a rod extended through the reeddents, as in Figs; 2 to 5, inclusive, the tails of the detectors,however, in this present instance, extending downwardly while the warpcontacts are arranged above the detectors, the centers of gravity of thedetectors being in the rear of their pivotal points, so that thetendency of the detectors is to assume the position shown inFig. 8. Thefeeler 15 carried on the ends of the arms 25 is normally raised by aspring 25 but is depressed by a link 15 connecting it with thefeeler-carrier g pivoted at the top of the reed dents and connected upin the manner shown in Figs. 1 to 5, inclusive, and operated in themanner described in reference to that construction. NVhen the feeler gis released by movement of the catch h, such movement willbecommunicated through the link 25 to the feeler t to raise the same andif all the detectors have been raised by the unbroken warp threads,therising feeler will pass between the tails of the detectors and the reeddents, and the operation of the loom will continue. When a. warp threadbreaks, however, its detector will remain in the full line position,Fig. 8, where it will obstruct the movement of the feeler, as thereshown, and cause the stopping of the loom by preventing full movement ofthe feeler-carrier g. In this construction, 25 is the depressor pivotedat 25 and normally drawn back from the detectors by a spring i W hen theauxiliary depressing movement is given to the feeler-carrier g by thecam m on the abutment plate, such depressing movement will becommunicated through the link 25 and pin 25 thereon to thedepressor topush into their full line positions Fig. 8 any detectors which mayremain in their abnormal position.

The principal features of this my present invention areasfollows,'viz:By arranging the warp contact and the pivotal point of adetector in substantially the relative positions shown, '5. e., with theWarp contact rest ing upon the warp threads within an angle of forty-five degrees of a perpendicular to the warp threads drawn through saidpivotal point, the longitudinal or sliding movement of the Warp threadin the contact or head of the detector by the friction which resultsfrom such sliding movement acts to turn the detector about its pivot andinto or toward its abnormal position independent of and in addition toany lateral movement of the warp thread due to shedding, which, in warpstop motions as heretofore generally designed, has alone been dependedupon to move the detectors.

So far as I am aware I am the first to conceive the idea of utilizingthe sliding or frictional contact between the warp contact or head ofthe detector and the warp thread or threads, to turn the said detectorabout its pivot from its normal into its abnormal position, in additionto or independent of any lateral movement or movements of the warpthread or threads due to shedding of the latter. To utilize thisfrictional contact as above it is necessary that the warp contact shouldrest against or upon the warp thread or threads within an angle offorty-five degrees of a perpendicular to the warp drawn through thepivotal point of the detector. If the warp contact is outside of anangle of forty-five degrees the sliding or frictional con tact has noappreciable effect upon the detector, the latter being movable only bypositive lateral movement of the warp thread or threads due to shedding.At any point, however, within an angle approximating fortyfive degreesthe frictional or sliding contact between the detector and the warpthread or threads is sufficient to at least assist, and in some cases,according to the relative positions of the said contact and pivotalpoint, to serve asthe only means for turning the detector from itsnormal into its abnormal position to indicate that the warp thread orthreads is or are unbroken.

By employing a tubular feeler, the same is made extremely light yet veryrigid and stiff against lateral or torsional stresses, which is a veryessential feature, inasmuch asit is desirable to operate the feeler atone end only, yet the action and accurate position of the feeler at theother end, and intermediate its ends, is as essential to the perfectoperation of the stop motion as the correct position of such feeler atthe operating end; and the depressor, which so far as I am aware, is newwith me, absolutely precludes any possibility of one or more of thedetectors remaining in their abnormal positions into which they havebeen moved by the unbroken warp threads.

The placing of the spacers between the reed dents and close to thedetectors pivoted between the same permits the reed dents to be drawn orbolted firmly together to make a stiff reed without any possibleliability of unduly cramping the detectors and thereby preventing freemovement of the same.

This invention isnot limited to the particular construction, shape,form, or arrangement of the difierent parts herein shown, for theconstruction shown is a single construction only selected by me toillustrate this invention.

I claim- 1. In awarp stop motion for looms, the combination with aseries of reed dents and warp detectors arranged between the same andadapted to be moved from their normal into their abnormal positions bythe unbroken warp threads, of a depressor, and actuating mechanism forthe same to move said detectors toward their normal positions,substantially as described.

by the unbroken warp threads; heddles and frames for the same to shedsaid warp threads; and devices on the lay whereby the latter at eachbackward movement strikes a heddle frame and moves the same to tightensaid warp threads, substantially as described.

v 4. A warp stop motion for looms, containing the following in strumentalities, viz:-a series of reed dents; warp detectors moving betweenthe same; and spacers between and separating said reed dents and havingportions extending close to the moving parts of sa1d detectors, clampingdevices at opposite ends of said reed dents and an additional clamp ingdevice intermediate said ends and passing through said spaces close tothe moving parts of said detectors, whereby said reed dents are firmlyheld separated at the proper distances from each other at the pointswhere movement of the detectors takes place, substantially as described.

5. A warp stop motion for looms, containing the followinginstrumentalities, vizz-a series of reed dents, each provided with anopening extending laterally through it; warp detec- IOC tors pivoted inand between said reed dents,

and having warp supports also located between the said reed dents, andentering the lateralopenings therein and spacers between and separatingsaid reed dents and having tail portions extending down past the pivotalpoints of the said detectors close to the warp supports thereof, tothereby maintain said reed dents properly spaced adjacent said warpsupports to prevent displacement of the warp threads, substantially asdescribed.

6. In a warp stop motion for looms, the combination of the followinginstrumentalities, vim-a reed composed of reed dents of differentlengths, the longer reed dents projecting above the shorter ones;spacers between the reed dents, and bolts to clamp the same and saidreed dents firmly together; warp detectors pivoted between the shorterreed dents; and a feeler pivoted in the extended ends of the longer reeddents, substantially as described.

7. A warp stop motion for looms, containing the followinginstrumentalities, viz:-a reed; consisting of aseries of reed dents andclamping devices to clamp the same rigidly together; warp detectorsarranged between the said reed dents, and adapted to be moved from theirnormal into their abnormal positions by the unbroken warp threads; afeeler pivoted also in the dents of the said reed; and co-operat-ingwith the said detectors, whereby removal of the reed takes with it bothdetectors and feeler without disturbing the adjustment of the same onewith relation to the other, and'a stopping mechanism for the loomcontrolled by the said feeler, substantially as described.

8. A warp stop motion for looms, containing the followinginstrumentalities, viz:a removable reed; warp detectors pivoted in andmovable between the dents thereof and adapted to be acted upon by theunbroken warp threads; a feeler; and a depressor both mounted in saidreed, and actuating mechanism for the said detectors whereby removal ofthe reed takes with it the said detectors, feeler, and depressor withoutdisturbing the adjustment of the same, substantially as de-' scribed.

9. A warp stop motion for looms, containing the followinginstrumentalities, viz:a series of reed dents; warp detectors arrangedbetween the same and adapted to be moved by the unbroken warp threads; afeeler pivoted in said reed dents; an independent pivotedfeeler-carrier; and means to move the same and thereby the said feeler,substantially as described.

10. A warp stop motion forlooms, containing the followinginstrumentalities, viz:-a series of reed dents; warp detectors arrangedbetween the same and adapted to be moved by the unbroken warp threads; afeeler; a depressor actuated thereby; and a lever to move said feeler inone direction toward said detectors and also in opposite direction tomove said depressor toward said detectors, substantially as-described.

11. In a warp stop motion for looms, a series of reed dents; spacersseparating the same and having projecting lugs; and warp detectorsarranged between the said reed dents, combined with a depressor mountedon said lugs, and means to move the same, substantially as described.

12. A warp stop motion for looms, containing the followinginstrumentalities, viz:a series of reed dents; warp detectors arrangedbetween the same and adapted to be moved by the unbroken warp threads; afeeler; a depressor actuated thereby; a pivoted lever to move saidfeeler; and two cam abutment surfaces to act upon opposite ends of saidlever and move the same first in one direction to actuate the feeler andthen in an opposite direction to actuate the depressor, substantially asdescribed.

13. A warp stop motion for looms, containing the followinginstrumentalities, viz:a series of reed dents each provided with anopening as a and warp detectors pivoted between and having thickenedheads to con stitute warp supportsproj ectin-g laterally into saidopenings, the heads of successive detecmaintain the said depressor incontact with said arms, substantially as described.

15. A warp stop motion for looms containing the followinginstrumentalities, viz:a series of reed dents; warp detectors arrangedbetween the same; a gravity-actuated feeler pivoted in said reed dents;an'independently pivoted feeler-carrier to engage and move said feeler;a lever to move said carrier and feeler in one direction againstgravity; and a catch to engage and hold said feeler and carrier in thepositions into which they are so moved; a shaft carrying a dagger and acam abutment to rotate said shaft and engage and thereby move said catchto release said feeler; and a stopping mechanism actuated by saiddagger, substantially as described.

16. A warp stop motion for looms, contaming the followinginstrumentalities, viz:a series of reed dents; warp detectors arrangedbetween the same and to be moved by the unbrokenwarp threads, agravity-actuated feeler a feeler carrier and shaft on which it ismounted provided with the lever 9 a catch to hold the said feeler in itsnormal position, the shaft h on which said catch is jonrnaled; its armsm and m, dagger M, moved by rotation of said shaft the vertically andhorizontally adjustable abutment m to control the shaft h and its plateml", tocontrol the lever g allsubstantially as described.

17. In a loom, a lay, a bellows, and means to compress the same at eachbeat of the lay, and an adjustable outlet for said bellows, arranged todirect a current of air laterally against the warp threads to move thelatter into their proper planes in an open shed substantially asdescribed.

18. In awarp stop motion for looms,aseries of warp detectors arranged tobe moved from their normal into their abnormal positions by the unbrokenwarp threads and asupport for said detectors, combined with a depressor,and actuating mechanism for the same to move said detectors toward theirnormal po sition, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

OBERLIN SMITH.

Witnesses:

Enos PAULLIN, LIDA M. BROOMALL.

ICO

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